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Reverse this procedure to install the WLAN module.
Fan
Description
Fan (includes cable)
NOTE:
To properly ventilate the computer, allow at least 7.6 cm (3 in) of clearance on the rear edge
of the computer. The computer uses an electric fan for ventilation. The fan is controlled by a
temperature sensor and is designed to turn on automatically when high temperature conditions exist.
These conditions are affected by high external temperatures, system power consumption, power
management/battery conservation configurations, battery fast charging, and software requirements.
Exhaust air is displaced through the ventilation grill located on the rear edge of the computer.
Before removing the fan, follow these steps:
1.
Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2.
Disconnect the power from the computer by unplugging the power cord from the computer.
3.
Disconnect all external devices from the computer.
4.
Remove the keyboard/top cover (see
5.
Disconnect the battery cable from the system board (see
Remove the fan:
1.
Disconnect the fan cable from the system board.
2.
Remove the three Phillips PM2.0×2.5 screws (2) that secure the fan to the base enclosure.
34
Chapter 4 Removal and replacement procedures preliminary requirements
Keyboard/top cover on page
Speakers on page
Spare part number
740149-001
23).
26).
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